add: partial support for Debian
add: memo for MongoDB
merge from master
merge from master
fix: python-apt for Google Compute Engine;
add: ansible-with-key alias
add: unattended-upgrades - automatic installation of security upgrades
add: set time-related messages to English
add: add-apt-repository support via 'apt-get install python-software-properties'
fix: apt install for JDK & MongoDB
fix: WebUpd8 key.
add: ant for Debian.
plus some minor fix.
add: Tayra - Incremental backup tool for MongoDB
change: install Node.js via NVM (Node.js Version Manager)
add: LVM (Linux Volume Manager) - userland logical volume management tools
add: nslookup for Debian
add: jemalloc
fix: typo
add: MMS monitoring agent
add: tayra tool
add: Docker on Debian
add: CoreOS for vagrant